Otter's Ski Bass

Designs for inboard or outboard power

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Otter
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Location: Anoka, MN

Otter's Ski Bass

Post by Otter » Thu Dec 27, 2018 7:22 pm

Hello from slushy Minnesota!
I have officially started my build with the purchase of the Ski Bass plan (and a pile of African mahogany). I will be using an outboard (plans provide options for both I/O and outboard). Reading through the plans has already generated a couple of questions, regarding the motor stringers (they are used in both versions, in the case of the outboard as a support for floor decking).
1. The schedule of materials call for 2"x4" solid wood members (I'm assuming that is rough dimensions) with a 3/8" plywood lamination. My mahogany is rough-planed at 1" (I have a planer and a drum sander to get them smooth as necessary)...assuming that when they say 2" nominal diameter they really mean 1 1/2" finished thickness, then the final thickness with plywood lamination = 1 1/2+3/8= 1 7/8" overall thickness. If I can laminate my mahogany to a 1 7/8" thickness, do I need a 3/8" lamination of plywood? Is there some other purpose for the plywood lamination?
2. The plans say that the motor stringers allow for a finished width of 3 5/8"....but they indicate that the motor stringers can be wider (which would cause frames #2 and #3 to need the floor timbers notched) or can be narrower (which require shimming). I am assuming that one would deviate from the plan motor stringer width to accommodate a certain I/O dimensioning....is there any reason for me to make the motor stringers wider than the plan dimension (which requires no notching of the floor timbers)?

I am sure this is just the beginning of about 1,000 questions....thanks Glen-L forum land!
Chris Otterness
Whitewater 16, Guillemot

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Bill Edmundson
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Re: Otter's Ski Bass

Post by Bill Edmundson » Fri Dec 28, 2018 7:48 am

Otter

I laminated the motor stringers from two solid pieces on my Tahoe, with no ply. Some feel the ply is for stability of the other piece. I think the two pieces of solid laminate stabilize each other. I didn't like the idea of single piece stringers Beside the fact that I couldn't find solid material that long.

Wood changes over time and will move on you. Laminating helps reduce this.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

TomB
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Re: Otter's Ski Bass

Post by TomB » Fri Dec 28, 2018 1:01 pm

Chris,

Congrats on the start. I agree with Bill, two layers of 1" would serve the same purpose as 1 1/2"+3/8". Probably goes without saying, lay 'em up with apposing grain so any twist or cupping in one board is resisted by the other.

The only reason I can come up with for deeper motor stringer would be to suit the IO or deck plan. If you need some extra depth for rod storage, for example. I would also notch the other way around, leave the floor timbers alone, notch the too tall motor stringers.
The stringers are notched in many of the designs, it really locks the frames and stringers together.

Tom

Otter
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Re: Otter's Ski Bass

Post by Otter » Fri Dec 28, 2018 6:31 pm

thanks for advice, guys...i will laminate the 1" boards together.
chris
Chris Otterness
Whitewater 16, Guillemot

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hoodman
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Re: Otter's Ski Bass

Post by hoodman » Sat Dec 29, 2018 3:45 pm

Awesome, keep us posted. Good to see a Ski-Bass on the forum.
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

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wingridr
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Re: Otter's Ski Bass

Post by wingridr » Wed Jan 02, 2019 8:15 pm

You know if you need any help with this, I am just a call or text away!

For those that may not know, Chris is my brother in law. We now have plans for 3 boats to build between the two of us! I think we should do a jet powered Squirt for us!

Otter
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Location: Anoka, MN

Re: Otter's Ski Bass

Post by Otter » Sun Jan 06, 2019 5:57 pm

Do any of you have experience using spruce for your frames? I have just been gifted a large quantity of spruce...and I figure I maybe i can save myself some of the mahogany i purchased for future projects, if I use spruce for the frames (where it wont show) in lieu of the mahogany.
Chris
Chris Otterness
Whitewater 16, Guillemot

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Bill Edmundson
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Re: Otter's Ski Bass

Post by Bill Edmundson » Mon Jan 07, 2019 7:56 am

Chris

You can find this on the home page at the bottom left of the screen. https://www.glen-l.com/wood-plywood/bb- ... ml#species

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

Otter
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Re: Otter's Ski Bass

Post by Otter » Sun Apr 14, 2019 6:54 pm

I thought I would share some progress with you:
20190414_171239.jpg
20190414_171210.jpg
still need to attach Frame 5 (on the stem)
It's coming along slowly but surely (emphasis on SLOWLY!)
Hope to have the transom by the end of the week.
It is already the most complex thing I have ever made...I feel like I have to think about 2 hours for every hour of work I actually out in!
Chris
Chris Otterness
Whitewater 16, Guillemot

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hoodman
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Re: Otter's Ski Bass

Post by hoodman » Sun Apr 14, 2019 7:44 pm

That looks sleek. I bet it will be a rocket.
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

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chugalug
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Re: Otter's Ski Bass

Post by chugalug » Mon Apr 15, 2019 5:07 am

A comfy chair and a beer helps for the thinking part.Just not too many right before the sawing part :lol:
Working on regular-sized Bo-Jest


"If it's not crooked,It's not mine

Otter
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Location: Anoka, MN

Re: Otter's Ski Bass

Post by Otter » Tue Apr 16, 2019 5:09 pm

I'm guessing this has been covered a few times in the forum, but at the risk of being redundant:
The plans recommend (but state it is not required) to install the side blanking prior to installing the battens. what are the advantages of doing one way vs the other? It appears that folks on the forum have been doing it either way to some degree.

Also...any potential issues with waiting to cut out the drop on the transom for the outboard until after the flip? I don't have a motor purchased yet, and im not planning to for a while...so I want to keep my options open for the width and depth of the cutout (though I'm pretty sure I will be going for a long shaft-25")
thanks ahead of time for any advice.
Chris Otterness
Whitewater 16, Guillemot

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hoodman
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Re: Otter's Ski Bass

Post by hoodman » Tue Apr 16, 2019 7:43 pm

I waited until after the flip to cut the motor cutout. It would have been easier when I had the transom flat on the bench but didn't end up being a problem in the end.
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

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